<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
       <iframe src="web11.1.html" width="500" height="500" name="abc"></iframe>
     <br/>
     <ul>
         <li><a href="列表.html" target="abc">列表</a></li>
         <li><a href="web11.1.html" target="abc">web11</a></li>
     </ul>
</body>
</html>